diff options
Diffstat (limited to 'sound/usb/mixer_quirks.c')
| -rw-r--r-- | sound/usb/mixer_quirks.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c index 279025650..f6c3bf79a 100644 --- a/sound/usb/mixer_quirks.c +++ b/sound/usb/mixer_quirks.c @@ -1519,7 +1519,11 @@ static int snd_microii_spdif_default_get(struct snd_kcontrol *kcontrol, /* use known values for that card: interface#1 altsetting#1 */ iface = usb_ifnum_to_if(chip->dev, 1); + if (!iface || iface->num_altsetting < 2) + return -EINVAL; alts = &iface->altsetting[1]; + if (get_iface_desc(alts)->bNumEndpoints < 1) + return -EINVAL; ep = get_endpoint(alts, 0)->bEndpointAddress; err = snd_usb_ctl_msg(chip->dev, |